Expanded-wood lamina.



A. M. STOLTEY.

EXPANDED Woon LAMINA.

Patented N0v.'1, 1910.

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UNITED STATES IngTENT oEEIoE.

ALBERT M. STOLTEY, OF NEWARK, NEW JERSEY.

ExPANDED-woon LAMINA.

Specilcation of Letters Patent.

Application led October 18, 1909.

a laminated body, made up of a plurality.

of sheets of wood veneer each sheetbeing provided with a series ofparallel extending weakening grooves running len hwise of the grain, thesheets then being engt-hened to tear the same apart within the groovesto provide a wooden openwork, the ungrooved portions being held togetherby the interveningwood fibers, two or more such torn and lengthenedsheets being securely united so that the grain of one 4sheet will runcrosswise to that of the other.

A further object of my invention is. to

provide a laminated body, made up of a plurality of sheets having aflat' and a grooved surface the sheets being lengthened to tear the sameapart within the grooves, two or more such lengthened sheets beingSecurely united with their flat surfaces in juxtaposition. v A stillfurther object is to provide a laminated body comprising a sheet of woodveneer provided with a series of parallel extending weakening groovesrunning approximately len thwise of the grain, the sheet being lengtened and torn asunder to provide a wooden openwork,-the sheet then beingbacked with a suitable paper fabric or other covering.

A still further object of my invention is to provide a new article ofmanufacture including two sheets of wood veneer each liav, ing a flatand a grooved surface, said sheets being lengthened and torn to' provldea Wooden openwork said sheets belng securely united wlth their grainsrunnin at right an les and facing this lamina with a suitabi paper,fabric or other coverings.

Vith the above and other objects in view the present invention consistsin the combination and arran ement of parts as will be hereinafter moreully described and ticularly pointed out in the appended clalms,

Patented Nov. 1, 1210. SerialNo. 523,171.

it being understood that changes in the specic structure shown anddescribed may be made within the scope of the claims witho ut departingfrom the spirit of the invention.

In the drawin s forming a part of this specification, an in which likenumerals of reference indicatel similar parts in. the several views,Figure 1 shows an enlarged end view of a sheet of grooved wood veneer asused in my invention previous to lengthening the same. Fig. 2 shows afragmentary portion of a lengthened sheet in top view isclosing thelocation of the unbroken st-ay portions of the treated veneer sheet.Fig. 3 shows a lamina made up of two connected len thened sheets, facedwith a coverl ing upon goth sides.

In carrying out the aim of my invention, I employ a sheet`or section lof wood veneer and provide one of the faces witha plurality of weakeningparallel running grooves 2 the grooves being formed by compresslng thewood.. rllhis construction then provides a member having theparallel-stay orming wood sections 3`witl1 the intervening compressedportions 5 These weakening grooves 2, may run lengthwise of the grain,or they may run slightly oblique to the grain.' After the veneer sheetshave been grooved, they are lengthened under force, resultin in thesheets separatingA at the points mar ing the weakest parts of the woodswithin the grooves 2. The stay forniing portions 3 remain intact, butthe coinpressed wood bers within the grooves partly se arate to providea wooden openwork as isclosed vin Fig. 2. Two or more sheets are thenconnected in their lengthened condition in such a manner that the stayforming members 3 u on one side of the lamina will run or exten at rightangles or obliquely to those upon the o posite side. By this method Iprovlde a lamina, but half the weight of the board of equal thickness,in which the transverse and longitudinal resistance will be greater andwhich will be flexible. These made u boards or sheets, ma be used in themanufacture of receptac es, boxes mailing boards, covers of books 4andot er articles.

The method of grooving and lengthening the veneer may be effected in anysuitable workman like manner. V

From the foregoing it will be seen that I provide an expanded woodveneer, and that a plurality of such expanded veneers are securelyunited to form a laminated board.

This lprocess includes the forming of strips .of veneer runningtransversely of the wood grain', by suitable planing means preferablyincludin a lathe for turning a log or block in a p ane transverse of thegrain and a planing membe movable transversely of the lathe to engagiJthe periphery of the lo'g or block constantly to produce a continuousstrip of veneer. The veneer may then be moistened or treated in anyother suitable manner to adap the ber of the wood to ready separationithout breakage. It then may be lengthened by being passed between twosets of rollers, the second hset engaging the veneer moving at a greatersurface speed than the rst set. The rst set of rollers should havesmooth surfaces, asshould one of those in the second set; but the otherroller in the second set should be provided with longitudinallyextending ribs, which compressing the wood slightly against the smoothroller weakens the structure' of the veneer just enough to allow the yspreading of\ the bers on the'line of compression.

And having thus described my said invention what I claim as new anddesire to secure by United States Letters Patent is:

A1. As a new article of manufacture, an expanded wood veneer comprisinga wooden openwork held together by intact portions of wood.

2. As a new article of manufacture, an expanded wood veneer comprising awood openwork held together by unaffected portions of wood runninglengthwise of the grain.

3. As a new article of manufacture, an expanded wood veneer comprising awo openwork held together by untorn portions of wood running diagonally.

4. As a new article of manufacture, a wood veneer having parallel Yrunning grooves the wood ber within the grooves being partly separated.`

As a. new article of manufacture .a-

wood veneer provided With a parallel run# ning series of grooves formedby compressing the material, the wood bers within the grooves beingseparated.

6. As a new article of manufacture a laminated body made up of' aplurality of sheets of wood veneer each sheet being expanded to' providea wood openwork held together by unaected portions of wood said sheetsunited with their grains extending and running at an angle.

7. A laminated body made up of a plurality of sheets of wood veneerstretched to provide break joints in the wood to form a flat openwork.

- 8. As a new article of manufacture a 'wood veneer provided withparallel running weakening grooves, the wood bers within the groovesbeing separated, and a backing covering said veneer. n

9. A laminated body, made up of a plurality of sections of wood veneer,each section having a series of parallel running stay forming portions,the wood bers between said stay forming portions being separated, saldveneer sections being secured to one'anot er.

10. A laminated body made up of a plu-` rality of sections of-woodveneer, each sec tion having a series of parallel running stay formingportions, the wood bers between said stay forming' portions beinseparated, said veneer sections being secure to one another, and afacing covering said veneer sections.

11. As a new article of manufacture a wood veneer having a series ofparallel running stay forming portions the wood bers between said stayforming portions being separated.

12. As a new article of manufacture an expanded wood veneer comprising aplurality of parallel running portions of wood, the material between theparallel portions being separated to provide a wood openwork.

13. A laminated body comprising a sheet of wood stretched diagonally toseparate its bers, and Va second similarly stretched sheet of wooddisposed with the major dimensions of its bers at right angles to thoseof the rst named sheet.

14. As a new :article of manufacture, a sheet of wood stretchedlaterally and diagonally of its grain to separate its bers.

In testimony whereof l aix my signature,

=in presence of two witnesses.

